Let me elaborate something for you as i'm an ex-HGDEP BC and
have talked to several TO about the Tridents,Yes the Tridents is
more powerful,Nice,Smooth but the spare parts order alone can take
up to a month if breakdown let alone top overhaul,Furthermore
Dennis/Cummins engines are not so popular with SBST Mechanics
compared to Merc/Scania and Volvo.